This is a very fine design. You're comparing it to my site, when you should be proud of something so well presented in a web where the norm is junk design like Engadget and Joystiq. I had to steal my ideas from someone too ;)

The navigation on this design is clear, that's all I can say on it. Good job.

There are some quick things I can spot in the code that I would do differently:

* Why #root? You can just hyperlink to # and the browser will go to the top of the page. That way you can also leave out the HTML element entirely, this still works in IE.

* Why is the JS in the head? This blocks all further downloading. Use the HTML5 shiv for IE, which uses conditional comments so that the JS won't block all the other browsers (and allows printing of HTML5 in IE). Then the placeholder JS code can go to the bottom of the body since it relies on the DOM being ready anyway, it serves no benefit at all being in the header.

* Soft drop-shadow on hyperlinks, but not on any other text? Don't quite understand that.

* The metric / rhythm is uneven in places. The padding above below the article text is oddly shorter than the padding left and right. It feels all cramped up the top with such tight spacing between the header, title and first line.

* The textarea can be resized outside the container. You need to use the resize CSS declaration to limit resizing the textbox to vertical only. You can also set a minimum and maximum height to stop people breaking the textarea. (this forum for example)

* The text under the textarea doesn't fit well with the post button

What you have here is a high quality website that stands above most of the junk on the web. Don't get too lost in the design (you're way ahead of the game) to forget that what matters is good content to read.